Icma 887 | Single pipe valve with Frontal knob

The manual valves 887 offer possibility to be reversible and can be
used on radiator systems with single-pipe ring type.
The valves can be installed only through the lower radiator connection, which is used both as fluid inlet and outlet.

In single-pipe systems, the radiators are connected in series, with respect to each manifold derivation. However,
the 887 series valves, set up for this type of system, send only 60% of the flow to the radiator, while the remaining
part of fluid is bypassed and routed to the next radiator. In this way the radiators can be intercepted individually (for
exclusion or maintenance), allowing the functioning of the radiators installed further downstream.

This series of valves is equipped with a system that allows the heat transfer fluid to be directed on the horizontal or
vertical path by means of a plastic key (supplied inside the package) which allows to change the flow direction inside
the radiator (see figures below)

Body: Brass CW617N UNI EN 12165
Lock ring: Brass CW617N UNI EN 12164
Obturator: Brass CW617N UNI EN 12164
Rod: Brass CW617N UNI EN 12164
Stop ring: Bronze phosphorus
Obturator guide: Acet. CV 25%
Knob: ABS white
Screw: Steel
Cup: Brass CW617N UNI EN 12165
Pipe union: Brass CW617N UNI EN 12165
Probe assembly: Various – see ST (856-891)
Gasket: EPDM perox

Working fluids: water and
glycol sol.
Max percentage of glycol: 30%
Max working pressure: 10 bar
Max differential pressure: 1 bar
Max working temperature: 100°C
Max flow to radiator: 60%